…it all went down at a Met Gala after party last week at the Standard Hotel in NYC. In the video … Jay Z, Beyonce and Solange step into the elevator … and then Solange goes crazy, screaming at Jay before unleashing a violent attack.

A large man — who appears to be a bodyguard — attempts to hold Solange back, but she manages to connect at least 3 times. At one point Solange throws a kick and Jay grabs her foot, but never attempts to strike her. Beyonce stands by without getting physically involved.

At this point, the reason for the violence is unknown. One has to think it was somewhat serious in order to kick off this type of punching and kicking.

You can see Jay Z’s security team stop the elevator between floors in an attempt to keep the melee hidden from the public. But there’s always a camera watching.